river dolphin
Amazonian aquatic mammal
River dolphins are freshwater cetaceans found in major river systems of South America and Asia.
Unlike their ocean-dwelling relatives, they have long, narrow snouts adapted for catching fish in murky water, and most have poor eyesight—some are nearly blind.
The term covers several distinct species: the Amazon river dolphin (pink dolphin), the Ganges and Indus river dolphins, and the Yangtze river dolphin (now likely extinct).
Stream entering larger river
- confluenceMeeting point of streams
- rapidsTurbulent river section
- meanderTo travel without direction
- floodplainFlood-prone riverside lowland
sediment · murky water · riparian · freshwater · channel · monsoon · inundation · oxbow lake
At risk of extinction
- extinctionComplete vanishing of a species
- habitat lossElimination of living spaces
- pollutionEnvironmental harm from waste
- dam constructionCreating river-blocking structures
bycatch · protected · sanctuary · critically endangered · vaquita · population decline · fishing nets · conservation program
Whale's breathing aperture
- echolocationNavigation through reflected sound
- flukesParasitic flatworms or lucky accidents
- flippersFoot-worn swim aids
- dorsal finFish's rear stabilizer
melon · rostrum · sonar · air-breathing · calf · nursing · gestation · warm-blooded
Navigation through reflected sound
- podSeed case or cetacean group
- intelligenceMental ability, cognitive capacity
- social behaviorActions within groups
- playfulInclined toward fun
surfacing · feeding · hunting · fish-eating · navigation · communication · clicks · whistles
tributary
Stream entering larger river
- confluenceMeeting point of streams
- rapidsTurbulent river section
- meanderTo travel without direction
floodplain · sediment · murky water · riparian · freshwater · channel · monsoon · inundation · oxbow lake · Amazon basin
endangered
At risk of extinction
- extinctionComplete vanishing of a species
- habitat lossElimination of living spaces
- pollutionEnvironmental harm from waste
dam construction · bycatch · protected · sanctuary · critically endangered · vaquita · population decline · fishing nets · conservation program · biodiversity
blowhole
Whale's breathing aperture
- echolocationNavigation through reflected sound
- flukesParasitic flatworms or lucky accidents
- flippersFoot-worn swim aids
dorsal fin · melon · rostrum · sonar · air-breathing · calf · nursing · gestation · warm-blooded · vertebrate
echolocation
Navigation through reflected sound
- podSeed case or cetacean group
- intelligenceMental ability, cognitive capacity
- social behaviorActions within groups
playful · surfacing · feeding · hunting · fish-eating · navigation · communication · clicks · whistles · curiosity
- rainforestrainforest, jungle, tropical, tropics, canopy
- Amazon Junglerainforest, jungle trek, canopy walk, piranha, anaconda
- Amazon RainforestAmazon, tropical rainforest, Amazon rainforest, Amazon basin, jungle
- Cetaceanswhale, porpoise, whales, orca, beluga
- Eurasian wildlifeSiberian tiger, giant panda, red panda, snow leopard, Asian elephant
- marine mammalswhales, whale, porpoise, seals, seal
river dolphinbottlenose dolphin
Intelligent marine mammal, curved snout
common dolphin · spinner dolphin · orca · pilot whale · porpoise
river, dolphin, riverside, rivulet, dolphins, riverbed, riverboat, riverfront, riverine